Automatic balance for aeroplanes.



L. SPIRO.

AUTOMATIC BALANCE FOR AEROPLANES.

APPLICATION FILED JUNE25,1912.

1,074,659. Patented Oct. 7, 1913.

3 SHEETS-SHEET 1.

WITNESSES 1N VENT 0R Leon Spiro L. SPIRO.

AUTOMATIC BALANCE FOR AEROPLANES.

APPLIOATION FILED JUNE 25,1912.

Patented Oct. '7, 1913;

3 SHEETS-SHEET 2.

WITNESSES L. SPIRO. .AUTOMATIG BALANCE FOR AEROPLANES. APPLICATION FILEDJUNE 25,1912.

Patented Oct. 7, 1913.

1 [N VEN TOR Leon Spi 1 0 f5 S Attorney g y sTArrEsrarnur ornion.

-.I:EO2\1:SP1RO,. 0;FEVERETT, wasnruerou.

- .auromarrcnamncn roaannormuns- To all whom it may concern Be it knownthat I, LEON.

v the county of Snohom-ish andState'of-Wash Aeroplanes, of whichthez'following is a.

the accompanying drawing.

2 This invention ,relatesjtoflying.machines, and has for its object theproduction of an,

eflicient balancing mechanism whereby the machine may be quickly andefliciently righted through an automatic mechanism hereinafterdescribed. 1

Another object of this invention is the production of an eificientclutch mechanism whereby an elevating propeller will be driven upon theends of the machine, provided the machine should begin to tip.

With these and other objects in view, this invention consists of certainnovel constructions, combinations, and arrangements of parts, as will behereinafter fully'described and claimed.

In the drawings :Figure 1 is a front view of the machine. Fig. 2 is afront view of the machine partly broken away. Fig. 3

- is a top plan'view of the machine partly broken away. Fig. 4 isacentral longitudinal section of the machine. Fig.5 is a centrallongitudinal section of the clutch mechanism used in connection with themachine.

' Fig. 6 is a section taken on line 66 of Fig. 3.

By referring to the drawings by numerals,

it will be seen that the machine comprises a frame 1 which carries theusual controlling wheels 2, and this frame 1 carries at each each end ofthe frame andupon the suppeller 13. A- clutch collar 14 is slidablySrmo, -a citizen; of the United States,.=residing tit-Everett, in:

ington, have invented certain new and useful Improvements 1nALItOmZLtICE Balances for.

end -a transversely extending beam 3. A supporting bracket 4 is alsocarried near Specification of Letters Patent; Ratented 0013,},1913,Application.fi1ed,3'une.25;1912:..:5eria1 No. 705,795. I

mounted -upon the shaft'5 intermediate the gears 8,. and. is .adapted tobe alternately :shiftedto-engage theclutoh collars 9 formed v.up-on;the. gears 8. Thenclutchcollar 14 iscontrolled bymeans of'an operatinglever 15 which lever is pivotally secured: to the lower plane=7, asindicated at-16. .The'lever 15 :straddles the "clutch'collar 14,asindicated in Fig. 5, and'is held in engagement there- .withbymeansof-Lapin 17- which travels in :the slots 18. The upper end of thelever 15 isconnected to a pendulum lever 19, by means of a link 20. Thependulum'lever 19 carries a pendulum weight 22 and this lever 19 issuspended from the top plane 23 by means of a hanger 24. It will be seenthat as the machine tips toward one side, the

weight 22 will cause the lever 25 to be thrown oyer toward the side towhich the machine is tipping, and throw the clutch collar 14 intoengagement with the clutch collar 9, and cause the gearrwheel 8 torotate.

A driving gear 25 is carried by the shaft 5 near each end, and thesedriving gears 25 mesh with the driving gears 26 carried by the verticalpropeller shafts 27. These shafts 27 are braced by means of the braces 3formed upon each end of the machine. A propeller blade 28 is carried byeach vertical shaft 27, and it will be seen that as the shaft 5 rotates,the propellers 28 will'be in turn rotated. Acluteh collar 14 is keyed tothe shaft 5, although, of course, the lever 15 is looselyconnectedthereto, so that the collar 14 may revolve with the shaft 5. The clutchcollar 14 is provided with a socket 29 near each end, in which ismounted a spring 30. This spring 30 'is held within the socket by meansof a collar 31, which collar is fixedly secured to the shaft 5 by meansof a pin 32. It will, therefore, be seen that as soon as the weight 22resumes its normal position, the 7 spring 30 will force the clutchcollar 14 out of-engagement-with the clutch 9. carried by 190 the gear8. l

From the foregoing description it will be seen that a very efficientdevice has been produced which will cause the propellers upon each endof the machine to be operated 9 ation thereof will not have to dependupon 110 the skill of the operator to throw the device lower plane,vertically extending bars holding said planes in spaced relation, atransversely extending bar secured to said vertically extending members,verticalshafts v journaled within saidtransversely extending bar, acollar positioned upon each shaft and resting upon said transverselyextending member for limiting the downward movement of said shaftrelative to said transversely extending bar, a propeller blade carriedby the upper end of said shaft, 1

a drive gear carried by the lower end of said shaft, a drive shaftextending longitudi nally of' said lower plane, gears carried by 21 saidshaft and meshing with said gears carried by said vertical shafts, apendulum suspended from the upper plane, an arm car-' ried by saidpendulum and extending laterally thereof, a clutch operating leversecured 2. to said arm, and clutch means cooperating with said driveshaft and engaged by said clutch operating lever for driving saidpropellers carried by said vertical shafts as said pendulum is swung Intestimony whereof=I hereunto affix my signature inpresence of twowitnesses.

. LEON SPIRO.

Witnesses:

FRANK KROEGER, .D. P. OCoNNoR.

